Hi All, great site here. Lots of good info that I've been scrolling through. I thought I'd post my build here to get as much info as possible. I've posted on a few forums because I'm finding my way as I go, and searching for as much info as I can get.

So far, I've got some pipe, made a frame, made some wheels (using a CNC router cut jig), cut some circles and welded them to the cylinders. Next up is to cut the firebox to chamber hole and attach the firebox to the main chamber. I'll build the smokestack once it's assembled on the frame and cut the door.

The dimensions are 500mm (20") diameter for the chamber and firebox and the main chamber is 1000mm (40") long and fire box 500mm (20") long.

Any comments or info is appreciated. It's been a big learning curve to build this and I'm trying to smash it out so I can get cooking.

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I found another build that used the same dimensions that I’ve been using for inspiration. What happens if the firebox is too large?

The Chimney and Throat are calculated from the FB volume, which in turn is calculated from the CC volume. You can use a larger FB but keep the chimney and especially the throat at the recommended correct sizes or you'll wind up with increased airspeed thru the CC.

How important is the shape of the firebox to cook chamber hole? According to Feldons calculator and the Pit Calculator here, I need a 50 square inch hole. Another forum build that uses the same dimensions has cut a rectangle the same size as I've cut a template for.

Is this going to work well or should I go with a semi-circle shape?

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